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Thread: C2040 - Night Shots

  1. #21
    Megadark
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    Wow the last picture was really noisy, like what others said, the rest of your pictures were ok. So far no such thing observed for my 3020. However, hot pixels do appear if aperture is open for too long.

    Please share your 20% after your course is over with me. I did not get to stay for the whole course.
    Last edited by Megadark; 2nd April 2002 at 09:41 PM.

  2. #22
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    wow!..i didnt know Singapore can see so many stars!!

    but that is really bad..and some more the ISO is only at 100..cant imagine when it is at 400

  3. #23
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    Forgot why I post the shots for. My qns is, the 1st photo is taken at 4s shutter exposure but no noise (even the original B4 going through PS6). The last photo was taken some time later whem my DC is on all the time and the noise come out. Does it mean I must turn off the DC after every picture to cool it down?
    Last edited by Kevin; 5th April 2002 at 08:18 PM.

  4. #24
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    OK the verdit is out. I think my theory stand. LAst night, I took 4 shots with ISO400 and the pictures see stars (noise) straight away. I let the DC cool down for half an hour then I retake 3 shots with ISO100 and 4s and 3s shutter speed and miracle happen, no noise. I will paste the links to 2 unedited pix and may you guys can help me to verify that is no noise.

    1.http://homex.coolconnect.com/member/...o/P4050307.jpg
    Make OLYMPUS OPTICAL CO.,LTD
    Model C2040Z
    Software v355p-73
    Datetime 2002:04:05 23:51:54
    Exposure time 4 s
    F-number 2.8
    Exposure program Aperture priority
    ISO speed ratings 100
    Date/time original 2002:04:05 23:51:54
    Date/time digitized 2002:04:05 23:51:54
    Max. aperture value 1.7
    Metering mode Pattern
    Light source Tungsten
    Flash No
    Focal length 8.1 mm


    2.http://homex.coolconnect.com/member/...o/P4050309.jpg
    Make OLYMPUS OPTICAL CO.,LTD
    Model C2040Z
    Software v355p-73
    Datetime 2002:04:05 23:53:21
    YCbCr positioning co-sited
    Exposure time 3 s
    F-number 2.8
    Exposure program Aperture priority
    ISO speed ratings 100
    Date/time original 2002:04:05 23:53:21
    Date/time digitized 2002:04:05 23:53:21
    Max. aperture value 1.7
    Metering mode Pattern
    Light source Tungsten
    Flash No
    Focal length 8.1 mm

  5. #25

    Default

    Originally posted by Kevin
    Forgot why I post the shots for. My qns is, the 1st photo is taken at 4s shutter exposure but no noise (even the original B4 going through PS6). The last photo was taken some time later whem my DC is on all the time and the noise come out. Does it mean I must turn off the DC after every picture to cool it down?
    Yes Kevin, hotpixels are dependent on the CCD temperature. When your camera has been on for sometime, and has continuously taken some pictures, hotpixel effect will be amplified.

    So for us poor souls with DCs without NR, a good policy is to shut down your camera once you are done with a nightshot to prevent further heating of the CCD. That helps for subsequent nightshots to a certain extent.

  6. #26
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    Thanks Tweek.

    BTW, what is GN of your Vivatar Flash?

  7. #27

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    Originally posted by Kevin
    Thanks Tweek.

    BTW, what is GN of your Vivatar Flash?
    120 feet (about 40m). Quite powerful but damn bulky!

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